Solar Rooftop Solutions for Homes and Buildings

Overview

A rooftop solar system generates direct current from photovoltaic modules, which an inverter converts to alternating current at your building's voltage. The output is consumed by your loads first; the balance is either exported to the grid or stored in batteries, depending on the system type.

GLS handles the full scope: structural and shadow assessment, capacity sizing against your consumption, module and inverter selection, mounting structure design, DC and AC works, earthing and lightning protection, commissioning and documentation.

Who it is for

• Independent houses and villas with usable terrace area
• Apartment associations looking to offset common-area consumption
• Shops, clinics, schools and small offices
• Buildings with a high day-time electricity load

How it works

Key benefits

• Lower monthly electricity import from the grid
• Predictable, long-life asset on an otherwise unused roof
• Reduced exposure to future tariff increases
• Lower carbon footprint for the building
• Optional battery backup where supply is unreliable

Technical considerations

System sizing

Capacity is sized from your last 6–12 months of consumption, available shade-free area and sanctioned load — not from a standard package.

Area requirement

As a planning guide, roughly 65–100 sq ft of shade-free area is needed per kW, depending on module wattage and structure height.

Structure

Hot-dip galvanised or pre-galvanised structures are designed for local wind loading and roof condition, with non-penetrative ballast where waterproofing must be preserved.

Maintenance

Module cleaning frequency depends on dust and site conditions; electrical connections, earthing and inverter logs are checked periodically.

Warranties

Product and performance warranties are issued by the respective manufacturers. GLS shares the applicable warranty documents for the components quoted for your project.

Process

1. 01 — Consultation

   We understand your load profile, electricity bill, tariff category and objective.

2. 02 — Site Assessment

   Roof or land survey covering area, orientation, shadow, structure and electrical infrastructure.

3. 03 — System Design

   Capacity sizing, layout, module and inverter selection, cable and protection design.

4. 04 — Proposal & Planning

   Detailed scope, bill of materials, indicative generation and commercial proposal.

5. 05 — Engineering & Installation

   Structure fabrication and erection, module mounting, DC and AC works, earthing and protection.

6. 06 — Testing & Commissioning

   Insulation, polarity, string current, earthing and inverter commissioning checks.

7. 07 — Grid Integration / Handover

   Coordination for net-metering or grid approval where applicable, then documented handover.

8. 08 — Monitoring & O&M

   Generation review, scheduled cleaning and inspection, and corrective maintenance.

Components we use

Project examples

GLS has completed 300+ projects across Tamil Nadu. Case studies in this category are being documented with client approval, and we publish only what owners have confirmed may be shared. Ask us for references relevant to your category and we will send what has been approved for disclosure.

Frequently asked questions